Finding the Fourth Proportional to 22,567.50, 31,143.18 and 12,631.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,567.50 : 31,143.18 = 12,631.50 : x
2. Step 2: Convert to fraction form
   22,567.50/31,143.18 = 12,631.50/x
3. Step 3: Cross multiply
   22,567.50x = 31,143.18 × 12,631.50
4. Step 4: Simplify right side
   22,567.50x = 393,385,078.17
5. Step 5: Solve for x
   x = 393,385,078.17/22,567.50
6. Step 6: Final answer
   x = 17,431.49